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Subject: Re: rw_semaphores
To: yodaiken@fsmlabs.com
Date: Mon, 16 Apr 2001 15:56:45 +0100 (BST)
Cc: dhowells@cambridge.redhat.com (David Howells),
        torvalds@transmeta.com (Linus Torvalds),
        andrewm@uow.edu.au (Andrew Morton), bcrl@redhat.com (Ben LaHaise),
        dhowells@redhat.com (David Howells),
        alan@lxorguk.ukuu.org.uk (Alan Cox),
        linux-kernel@vger.kernel.org (Kernel Mailing List)
In-Reply-To: <20010416083912.C4036@hq.fsmlabs.com> from "yodaiken@fsmlabs.com" at Apr 16, 2001 08:39:12 AM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> I'm trying to imagine a case where 32,000 sharing a semaphore was anything but a 
> major failure and I can't. To me: the result of an attempt by the 32,768th locker
> should be a kernel panic. Is there a reasonable scenario where this is wrong?

32000 threads all trying to lock the same piece of memory ? Its not down
to reasonable scenarios its down to malicious scenarios